Chalcogen, Non-disordered, Quaternary, Values of electronic energy gap

• C-H-N-O
• H-N-O-P
• H-K-O-P
• H-Na-O-P
• H-N-O-S
• chalcogen
• non-disordered
• quaternary
• transitional
• monoclinic
• orthorhombic
• triclinic
• tetragonal
• trigonal